Brake-operating mechanism.



L. W. HORNEL BRAKE OPERATING MECHANISM AP PLICATION' FILED IAN-5.1916.

Patented Apr. 9, 1918.

III/III INVENTUR WW ATTORNEY UNITE STATES PATEN' FFIQE.

LAWRENCE WESLEY HORNE, OF NEW YORK, N. Y., ASSIGNOR TO LORD MANUFACTURING 00., OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

BRAKE-OPERATING MECHANISM.

Application filed January 5, 1916. SeriaLNo. 70,381.

To all whom it may concern:

Be it known that I, LAWRENCE WESLEY IIORNE, a citizen of the United States, and

resident of the town of Bayside, county of Queens, city and State of New York, have invented certain new and useful: Improvements in Brake-Operating Mechanism, of which the following is a Specification.

The object of this invention is to produce a brake that will operate more rapidly than the ordinary hand brake and yet one that will be quite as eflicient and that will require less space for its operative mechanism.

This brake may be arranged low down and in a space not utilized by other mechanisms and the portion that projectsupward is so small that it will not be met by the body of the motorman nor will it limit the platform room which is then free to be utilized by passengers or others.

The brake being of the double acting type and having a peculiarly designed drum will be found more rapid'in its operation than the ordinary wheel operated brakes. This and other features Will be developed as the specification progresses.

The following 'is what I consider the best means of carrying out this invention and The accompanying drawings form a part of this specification, in which Figure 1 shows a front elevation of a brake with the casing removed. 7

Fig. 2 is a side elevation partly in section of the device shown in Fig.

Similar reference numerals indicate like parts in all the figures where they appear. At 1 I show an ordinary brake chain.

This chain may have one end connected to a .treme end being secured to the eye 41 formed in a lug 5 which lugs is in turn formed integral with the drum 3. Thedrum 3, rs tapered and is also provided with an enlarged portion 6, which rapidly takes up the slack in the chain as the chain is wound upon the tapered drum and from the larger to the smaller end. thereof the power applied to the chain will be increased due to the fact that the reduced diameter Will take up the chain more slowly.

The drum 3 is mounted upon a shaft 7 and is operated by means of a gear 8 the only Patented Apr 9, 1918.

'11 I pivot an arm 14 the free end of which terminates upon a pivot 15 upon which the dog 9 is also supported. A second lever 16 extends to and is free to rotate upon the shaft 7.

Upon the shaft 7 and rotatable thereon I arrange another lever 17 which extends outwardly at an angle to the lever 16 and which terminates in a rotatable. connection with the pivot 18 upon which the dog 10 is free to move. A short lever 19 is also pivotally mounted upon the pin 18 and is rotatably engaged with another arm of the lever 11, and it will be noted that the connections of both of the rods or bars let and 19 are upon the same side of the shaft 12 to which the angular lever 11 is secured.

Iprovide a simple means for disengaging the dogs 9 and 10 from the ratchet wheel 8, this means consists of a casting loosely se cured upon the shaft 7 and'having three projections 20, 21, and 22. Into the projection 22 I pivotally secure a bar 23 which terminates in a foot operatedlever 24:. To the projection 20 I pivotally connect a rod 25, the upper end of which is loosely or pivotally connected to the dog 9. Upon this rod 25 I arrange a spring 26, one end of which impinges upon a projection 27 which may be a block or lug formed integral with the bar or lever 16. This spring 26 also impinges upon a casting 28, which may receive the lower end of the rod 25 and it urges this casting and the rod 25 downward so as to retain the dog 9 in engagement with the ratchet wheel ,8. The pivot 29 in the projection 20 is received in a slot 30 in a casting 2-8, which slot is provided to allow the dog 9 to ratchet across the teeth of the ratchet wheel 8 during a reverse motion of the dog 9.

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